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From "mlowicki (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-9702) Repair running really slow
Date Thu, 02 Jul 2015 13:56:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14611607#comment-14611607
] 

mlowicki edited comment on CASSANDRA-9702 at 7/2/15 1:55 PM:
-------------------------------------------------------------

After another ~12 hours it progressed to 10.21%. 6 hours later it's 10.52%.


was (Author: mlowicki):
After another ~12 hours it progressed to 10.21%.

> Repair running really slow
> --------------------------
>
>                 Key: CASSANDRA-9702
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9702
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: C* 2.1.7, Debian Wheezy
>            Reporter: mlowicki
>             Fix For: 2.1.x
>
>         Attachments: db1.system.log
>
>
> We're using 2.1.x since the very beginning and we always had problem with failing or
slow repair. In one data center we aren't able to finish repair for many weeks (partially
because CASSANDRA-9681 as we needed to reboot nodes periodically).
> I've launched it today morning (12 hours now) and monitor using https://github.com/spotify/cassandra-opstools/blob/master/bin/spcassandra-repairstats.
For the first hour it progressed to 9.43% but then it took ~10 hours to reach 9.44%. I see
very rarely logs related to repair (each 15-20 minutes but sometimes nothing new for 1 hour).
> Repair launched with:
> {code}
> nodetool repair --partitioner-range --parallel --in-local-dc {keyspace}
> {code}
> Attached log file from today.
> We've ~4.1TB of data in 12 nodes with RF set to 3 (2 DC with 6 nodes each).



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